ip6addr (empty) → 0.1

raw patch · 7 files changed

+238/−0 lines, 7 filesdep +basesetup-changed

Dependencies added: base

Files

IsIPv6Addr.hs +112/−0
LICENSE +9/−0
Main.hs +72/−0
Makefile +18/−0
README +6/−0
Setup.hs +2/−0
ip6addr.cabal +19/−0

+ IsIPv6Addr.hs view

@@ -0,0 +1,112 @@+--   ip6addr filters parsed IPv6 Addresses against RFC 4291
+--   Copyright (c) 2009, Michel Boucey
+--   All rights reserved.
+
+--   Redistribution and use in source and binary forms,
+--   with or without modification, are permitted provided that
+--   the following conditions are met:
+
+--   Redistributions of source code must retain the above copyright notice,
+--   this list of conditions and the following disclaimer. Redistributions in
+--   binary form must reproduce the above copyright notice, this list of
+--   conditions and the following disclaimer in the documentation and/or other
+--   materials provided with the distribution. The name of the author may not be
+--   used to endorse or promote products derived from this software without
+--   specific prior written permission.
+
+--   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+--   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+--   THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+--   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+--   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+--   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+--   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+--   OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+--   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+--   OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+--   ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+module IsIPv6Addr (isIPv6Addr) where
+
+import Data.Char (isDigit,isHexDigit)
+import Data.List (groupBy)
+import Data.Function (on)
+
+-- Parsing embedded IPv4 address
+
+is8bitsToken :: String -> Bool
+is8bitsToken s = if (not $ null s) && all isDigit s
+                 then t >= 0 && t <= 255 else False
+                 where t = read s::Int
+                 
+isIPv4Token :: String -> Char
+isIPv4Token s
+              | s == "." = 'd'
+              | is8bitsToken s == True = '8'
+              | otherwise = 'u'
+
+internalIPv4Rep :: [String] -> String
+internalIPv4Rep = map isIPv4Token
+
+tokenizeIPv4AddrInput :: String -> [String]
+tokenizeIPv4AddrInput = groupBy ((==) `on` (=='.'))
+
+parseIPv4Tokens :: String -> Bool
+parseIPv4Tokens s = s == "8d8d8d8"
+
+embeddedIPv4Addr :: String -> Int
+embeddedIPv4Addr s
+                   | f == 0 = 0
+                   | f == 1 = 1
+                   | otherwise = -1
+                   where f = length $ filter(=='4') s
+
+isIPv4Addr :: String -> Bool
+isIPv4Addr = parseIPv4Tokens . internalIPv4Rep . tokenizeIPv4AddrInput
+
+-- Parsing IPv6 Address
+
+is16bitsToken :: String -> Bool
+is16bitsToken s = l < 5 && l > 0 && all isHexDigit s where l = length s
+
+tokenizeIPv6Input :: String -> [String]
+tokenizeIPv6Input = groupBy ((==) `on` (==':'))
+
+ipv6AddrToken :: String -> Char
+ipv6AddrToken s
+               | s ==":" = 'c'
+               | s == "::" = 'd'
+               | is16bitsToken s == True = '6'
+               | isIPv4Addr s == True = '4'
+               | otherwise = 'u'
+               
+internalIPv6Rep :: [String] -> String
+internalIPv6Rep = map ipv6AddrToken
+
+parseInternalRep :: String -> Bool
+parseInternalRep s = 'u' `notElem` s
+
+isCompressed :: String -> Int
+isCompressed s
+              | c == 0 = 0
+              | c == 1 = 1
+              | otherwise = -1
+              where c = length $ filter (=='d') s
+
+lengthConstraints :: String -> Bool
+lengthConstraints s = (l == 15 && c <= 0) || (l < 15 && c == 1)
+                      where l = length s
+                            c = isCompressed s
+
+validLastToken :: String -> Bool
+validLastToken s = case embeddedIPv4Addr s of
+                           0 -> t == '6' || t == 'd'
+                           1 -> t == '4'
+                           -1 -> False
+                           where t = last s
+
+testsIPv6Addr :: String -> Bool
+testsIPv6Addr s = lengthConstraints s && parseInternalRep s && validLastToken s
+   
+isIPv6Addr :: String -> Bool
+isIPv6Addr = testsIPv6Addr . internalIPv6Rep . tokenizeIPv6Input

+ LICENSE view

@@ -0,0 +1,9 @@+ip6addr filters parsed IPv6 Addresses against RFC 4291
+
+Copyright (c) 2009, Michel Boucey All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+ Main.hs view

@@ -0,0 +1,72 @@+--   ip6addr filters parsed IPv6 Addresses against RFC 4291
+--   Copyright (c) 2009, Michel Boucey
+--   All rights reserved.
+
+--   Redistribution and use in source and binary forms,
+--   with or without modification, are permitted provided that
+--   the following conditions are met:
+
+--   Redistributions of source code must retain the above copyright notice,
+--   this list of conditions and the following disclaimer. Redistributions in
+--   binary form must reproduce the above copyright notice, this list of
+--   conditions and the following disclaimer in the documentation and/or other
+--   materials provided with the distribution. The name of the author may not be
+--   used to endorse or promote products derived from this software without
+--   specific prior written permission.
+
+--   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+--   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+--   THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+--   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+--   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+--   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+--   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+--   OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+--   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+--   OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+--   ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import System.IO
+import System.Exit
+import System.Environment
+import System.Console.GetOpt
+
+-- local import
+import IsIPv6Addr
+
+data Flag = Help | Version | Stderr
+            deriving (Show,Eq)
+
+options :: [OptDescr Flag]
+options =
+          [Option ['v'] ["version"] (NoArg Version) "show version number"
+          ,Option ['e'] ["errors"]  (NoArg Stderr)  "throw out discarded inputs to stderr"
+          ,Option ['h'] ["help"]    (NoArg Help)    "show usage"]
+
+parseArgs args = case getOpt RequireOrder options args of
+                 ([],[],[])           -> evalInputs . lines =<< getContents
+                 ([Version],[],[])    -> putStrLn version >> exit
+                 ([Help],[],[])       -> putStrLn (usageInfo help options) >> exit
+                 ([Stderr],[],[])     -> evalInputsErr . lines =<< getContents
+                 ([Stderr],inputs,[]) -> evalInputsErr inputs
+                 ([],inputs,[])       -> evalInputs inputs
+                 (_,_,errs)           -> hPutStr stderr (concat errs ++ usageInfo help options)
+                                         >> exitWith (ExitFailure 1)
+
+evalInputs :: [String] -> IO ()
+evalInputs [] = exit
+evalInputs (a:as) = if isIPv6Addr a
+                    then hPutStrLn stdout a >> evalInputs as
+                    else hPutStr stderr ""  >> evalInputs as
+
+evalInputsErr :: [String] -> IO ()
+evalInputsErr [] = exit
+evalInputsErr (a:as) = if isIPv6Addr a
+                       then hPutStrLn stdout a >> evalInputsErr as
+                       else hPutStrLn stderr a >> evalInputsErr as
+
+version = "ip6addr 0.1"
+help   = "Usage: ip6addr [-v|-h] | [-e] [address ...]\n"
+exit    = exitWith ExitSuccess
+
+main = getArgs >>= parseArgs

+ Makefile view

@@ -0,0 +1,18 @@+RHS=runhaskell Setup.hs++all: clean configure build install++clean:+	$(RHS) clean++configure: clean+	$(RHS) configure++build: clean configure+	$(RHS) build++install: clean configure build+	$(RHS) install++sdist:+	$(RHS) sdist

+ README view

@@ -0,0 +1,6 @@+ip6addr is a command line tool written in Haskell for filtering
+IPv6 addresses parsed against RFC 4291. By default, ip6addr outputs
+only validated inputs, i.e. IPv6 addresses. Option -e throws out
+discarded inputs to stderr, that have to be redirected.
+
+Copyright (c) 2009, Michel Boucey All rights reserved.

+ Setup.hs view

@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

+ ip6addr.cabal view

@@ -0,0 +1,19 @@+Name:		ip6addr
+Version:	0.1
+Author:         Michel Boucey <michel.boucey@gmail.com>
+Maintainer:     Michel Boucey <michel.boucey@gmail.com>
+Homepage:       http://www.cybervisible.fr/ip6addr
+Category:	Console,Network
+Synopsis:	Command line tool that filters parsed IPv6 Addresses against RFC 4291
+Description:	ip6addr is a command line tool for filtering IPv6 addresses parsed against RFC 4291. By default, ip6addr outputs only validated inputs, i.e. IPv6 addresses. Option -e throws out discarded inputs to stderr, that have to be redirected.
+License:        BSD3
+License-File:   LICENSE
+Build-Type:	Simple
+Cabal-Version:	>= 1.2
+Extra-Source-Files: IsIPv6Addr.hs
+Extra-Source-Files: README
+Extra-Source-Files: Makefile
+
+Executable ip6addr
+    Main-Is:  Main.hs
+    Build-Depends:	base <= 4 && < 5